Signal Generation Circuit With Event-Driven Frequency Switching

Solution Overview

Problem

Existing chaotic random bit generators face challenges in maintaining chaotic evolution due to constraints related to process variations, power supply, and temperature, which affect the synchronization frequency and oscillator behavior.

Innovation Solution

A method for generating a chaotic signal by providing a first signal with a first frequency and switching to a second signal with a higher frequency based on predefined events, allowing the system to evolve chaotically without relying on specific synchronization frequency constraints, ensuring robustness and minimizing constraints on the chaotic regime.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a chaotic system is designed to generate random bit streams, then perfect random bit streams can be generated theoretically, but the circuit requires several constraints to be verified over process variations, power supply, and temperature to maintain chaotic evolution

Engineering Contradiction:

Improvechaotic evolution maintenanceVSAvoidconstraint verification complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent implements dynamic frequency switching of the second signal based on detected events in the first signal. The second signal generator switches between a first frequency and a second frequency dynamically, rather than using a fixed frequency, allowing the system to adapt to different operating conditions while maintaining chaotic evolution without strict constraints on synchronization frequency

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the frequency parameter of the second signal dynamically based on the state of the first signal. By switching the frequency of the second signal between two different values according to detected events, the system maintains chaotic behavior without requiring precise control of synchronization frequency, thereby reducing the complexity of constraint verification

Inventive Principle:

Principle #35Parameter changes

2Stability of the object's composition

If the second signal frequency is switched based on synchronization frequency constraints, then chaotic evolution can be maintained, but the system becomes sensitive to process variations, power supply fluctuations, and temperature changes

Engineering Contradiction:

Improvechaotic regime stabilityVSAvoidenvironmental variation tolerance

Core Design Contradiction:

Stability of the object's compositionVSAdaptability or versatility

Solution Approach 1:

The system uses the first signal itself as the trigger for switching the second signal's frequency. The second signal generator detects events in the first signal and automatically switches its own frequency based on these detections, creating a self-regulating mechanism that maintains chaotic evolution without external control or sensitivity to environmental variations

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The patent implements dynamic frequency switching of the second signal based on detected events in the first signal. The second signal generator switches between a first frequency and a second frequency dynamically, rather than using a fixed frequency, allowing the system to adapt to different operating conditions while maintaining chaotic evolution without strict constraints on synchronization frequency

Inventive Principle:

Principle #15Dynamics

3Reliability

If strict synchronization frequency constraints are imposed to ensure chaotic evolution, then the chaotic regime can be maintained, but the circuit area and power consumption increase

Engineering Contradiction:

Improvechaotic evolution guaranteeVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent uses a simplified switching mechanism that only requires detecting events in the first signal to trigger frequency changes in the second signal. This partial action approach (switching only when needed based on event detection) maintains chaotic evolution without requiring continuous complex control, thereby reducing power consumption and circuit area

Inventive Principle:

Principle #16Partial or excessive action

Solution Approach 2:

The patent implements dynamic frequency switching of the second signal based on detected events in the first signal. The second signal generator switches between a first frequency and a second frequency dynamically, rather than using a fixed frequency, allowing the system to adapt to different operating conditions while maintaining chaotic evolution without strict constraints on synchronization frequency

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20140021984A1Methods for generating a signal and a signal generation circuit

Publication Date: 2014.01.23 INFINEON TECHNOLOGIES AG

AI summary

A method for generating a signal is provided, the method including: providing a first signal having a first signal frequency; providing a second signal having a second signal frequency or a third signal frequency, wherein the second signal frequency is higher than the third signal frequency; switching the second signal having the second signal frequency to the third signal frequency based on a predefined first signal event of the first signal; and returning the second signal having the third signal frequency to the second signal frequency in response to a predefined second signal event.